GATE BT 2020 Paper 1 — page 5

Questions 13–15 of 65. Imported answers require review unless explicitly marked reviewed.

Which of the following statements are CORRECT?

[P] Viruses can play a role in causing human cancer

[Q] A tumor suppressor gene can be turned off without any change in its DNA sequence

[R] Alteration in miRNA expression levels contributes to the development of cancer

Your answerChoose one option.

P and Q only

Q and R only

P and R only

P, Q and R

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Which class of antibody is first made by developing B cells inside bone marrow?

Your answerChoose one option.

IgG

IgE

IgA

IgM

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Determine the correctness or otherwise of the following Assertion [a] and the Reason [r] regarding mammalian cells.

Assertion [a]: Cells use Ca²⁺, and not Na⁺, for cell-to-cell signaling

Reason [r]: In the cytosol, concentration of Na⁺ is lower than that of Ca²⁺

Your answerChoose one option.

Both [a] and [r] are true and [r] is the correct reason for [a].

Both [a] and [r] are true but [r] is not the correct reason for [a].

Both [a] and [r] are false.

[a] is true but [r] is false.

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2020 · Paper 1